Check Washing Fraud in the UK
How cheque washing fraud operates in the United Kingdom, where cheque usage is declining but high-value cheques for legal, property, and business transactions remain a target.
Part of: Check Washing Fraud
Last reviewed: 9 June 2026
While cheque usage in the UK has declined significantly in consumer contexts, cheques remain in use for specific high-value transactions: solicitor client account payments, property deposits, business-to-business payments, and private personal transactions. This concentration of high-value cheque usage in specific transaction categories means that UK cheque washing fraud, though less voluminous than in the US, tends to target higher individual amounts.
The UK context also differs in that Royal Mail is both the primary postal carrier and the entity responsible for investigating postal fraud, while in the US the USPS Postal Inspection Service has a dedicated and well-resourced fraud investigation function. Victims in the UK should report to both their bank's fraud team and Royal Mail Security.
The shift toward Faster Payments and CHAPS for large transactions has reduced UK cheque fraud opportunities over time, but the specific transaction types where cheques persist remain attractive targets.
How this scam works on the UK
A high-value cheque — a solicitor's payment, a property transaction, a business invoice settlement — is posted in a standard envelope through Royal Mail. A fraudster intercepts the item at a collection point, residential letterbox, or within the postal system, extracts the cheque, and chemically removes the payee name and amount while leaving the account details and signature.
The cheque is rewritten with a new payee and higher amount and deposited into a mule account via a bank branch or mobile deposit. Funds are rapidly withdrawn or transferred. The original sender's account is debited for the altered amount.
The solicitor, business, or individual who wrote the cheque only discovers the fraud when the intended recipient reports non-receipt or when their bank statement shows an unexpected debit.
Common red flags
- High-value cheque you sent does not reach its destination within expected postal timeframe
- Bank account shows a cleared cheque for an amount significantly different from what you wrote
- Recipient of a cheque payment contacts you to report it was never received
- Bank contacts you about a suspected altered cheque that has been flagged in processing
How to protect yourself
- Use a gel pen or permanent ink pen when writing cheques — these resist chemical washing more than ballpoint ink
- Send high-value cheques by Royal Mail Special Delivery or tracked services for verification
- Switch to Faster Payments, CHAPS, or BACS for large transactions to eliminate cheque interception risk
- Monitor bank account activity regularly for unfamiliar cheque clearances
- For solicitor or property transactions, confirm with the recipient immediately after posting and follow up within 48 hours
How to report it
- Contact Royal Mail Security to report suspected mail theft or cheque interception
- Report to your bank's fraud team immediately on discovering an altered cheque clearance
- Report to Action Fraud at actionfraud.police.uk
Frequently asked questions
Is it safe to send cheques by post in the UK for large transactions?
The risk of cheque interception increases with the value of the cheque. For high-value transactions, switching to electronic payment — Faster Payments for amounts up to the bank's limit, or CHAPS for very large sums — eliminates the cheque interception risk entirely.